Power press



W. KLOCKE Nov. 11, 1930.

POWER PRESS Filed June 2, 1927 '2 Sheets-Sheet l INVENTOR By Altprnegs, W f

Nov. 11,1930; WKLQCKE 1,781,397

POWER PRESS Filed June 2, 1927 2 Sheets-Sheet 2 By Altorneys,

ammwlm INVENTOR Patented Nov. 11, 1930 U STATES PATENT OFFICE WILLIAM KLOGKE,-OF WOODI-IAVEN, YORK, ASSIGNOR TO E. BLISS COMPANY, OFBROOKLYN, NEW YORK, A. CORPORATION OF DELAWARE POWER PRESS Application filed. June 2,

or otherwise working metal in sheet or plate.

form or for the production of'drop forgings.

' According to the present invention the working parts of two presses are mounted upon one press frame. Ordinarily the frame supports the working parts peculiar to only one press and for two presses two complete frames are required. By the present in vention the usual idle or unutilized back portion of a press frame is made to carry a second set of Working parts, so that the press becomes a double press equivalent to two presses set backto back but taking less room because only one frame serves for both. In

the useof presses of this character it rarely happens thata press is used continuously so that there are considerableintervals of timewhen any given press is idle; such idle presses occupy valuable space which during such time is unutilized. The present invention where a number of pressesare employed effects a considerable saving in the first cost, since the single frame for the twin presses has but little more weight than the usual frame for one press; it effects a considerable saving in room, so that floor space isbetter utilized and correspondingly avoids theloss of space when presses are idle; and is safer because it avoids passages behind presses where accidents are more liable to happen. When two presses are running, it would rarely happen that their punches or other striking parts would encounter the resistance in their effective strokes at the same instant, and only in such event could thepress frame receive the maximum strain upon it incident to the operation of both presses; to save the press from such strain and thereby enable the frame for the two presses to be made substantially no heavier than the ordinary frame for one press, the present invention provides .neans whereby to guard against the simultaneous starting of both presses and consequently to prevent their both receiving their active strains at the same instant.

The preferred form of the invention is shown in the accompanying drawings, where- 1927. Serial no. 195,976.

Figure 1 is a side elevation of the double a or twin press.

Fig. 2 is a front elevation of one side of the press viewed from the right in Fig. 1.

Fig. 3 is a planof the press.

Fig. 4c is a side elevation of the press frame,

a and an adjustable bed I) with a lifting screw 0 and fastening bolts (Z engaging in slots E for fixing the bed at varying heights. The press parts 0 comprise as shown a fixed or immovable bed f carried on a solid bracket 9 in the usual manner. Both the presses have any usual construction of vertically reciprocatin g head or slide 72. carried in slideways in any usual manner and connected in any suitable way with the operating means whereby to reciprocate these heads. The drawings show drive shafts D and D driven by pulleys or fly wheels E and E, the shafts having cranks or eccentrics connected by connecting rods or pitmen z' to the respective sliding heads it, these being usual constructions in such presses, and forming no part of the present invention. They may be substituted by any other known type of driving means for power presses. In short the particular press mechanisms shown are given merely as examples. a

I In order to provide bearings for the two shafts D D, the frame A at its top is carried to both sides and there formed with bearing members 9' j. The frame forms ineffect a bridge across between these bearings in order that in the event of concurrent or nearly concurrent working strains being encountered in the two press members, the horizontal components of these strains may be resisted dito prevent the pulling down of thearmrp rectly or substantially so by thesolid metal of the press head extending almost directly across between the bearings. This also strengthens the head of the frame for resisting the'strain due torthe operation of either press alone;

and if bo'th strains concur, the frame is' sub- 'jected to no more or but little more stress than if it supported. but a single setof press members. 1:.

It is important 't'oiinsu'r'e againstithefra'me receiving simultaneously the reaction due to the punchlngor other work strains of the two sets of press members occurr ng at precisely the same instant,'that'isfat'the" same" point in the revolution of each of the two shafts; To this end provision is made for in; suring that the two presses may nothappen to be started exactly .togetherfllo accomplish this, advantage is taken of the construction 7 'of clutch which is zuniversally .appliedlin gpresses of the Bliss ty.pe, nainely, a rocking key or bolt carried in a groove in the shaf" and adapted when oscillated to enter intoone or more notches within the hub of the rotating, pulleyor other driving part E 011E. As this type of clutch is well understood,it is sufficient to illustrate it in dotted outline, I as in Fig. 1 where 7c is the oscillating keyfhav ing aprojecting arm Z which is stopped by'en; countering a lever-m operatedfrom a treadle arm l which; it stops, turning the key to the r.

position where it frees itselffrom the notch in; the driving Wheel. Tothis well-known mechanism 'I'superadd a shaft F to which .are connected arms 2) pbn opposite. sidesof theframe, the arm 79 forming a joint connectionbetlween the rods 9 1", between the treadle land clutch stop lever forone press and the arm J p performingthe same function with respect to the rods 9 r of the otherpress.

,Theshaft F hast-he arm p keyed to it while the arm p turns freely onit; it also haske'yed to it an arm 8 which consequently through the shaft forms a lever with the arm-p. The arm 5 acts'as a stop cooperat ng with the arm pf, being preferably provided with a screw t arranged to strike a l-ug on the arm 2. It results from this construction that y when the treadle T- is depressed to start the press members B, the arm 8 t actsas a stop and consequently to prevent the depression f the 136 16 T-'-, $i ffl-rt the press members v C. Or, onthe'other hand, if the treadlejT I offthe same type.

is first depressed, its arm p ooacting with the arm sand screw twill preventthe pressing 6 down of the treadle T to startthe press B.

This coacting mechanism thus serves, in the case of -presses which are driven jone revolution at a time to make" one 'strokeupon the pressing down of the t'readle, to prevent both presses'ibeing started at the same instant, and consequently to prevent both presses per forming their Workingstrokes at the same instant and subjecting the frame to a double 7 The pressprovided by this invention saves, V

considerable"valuable factory space, since four rows .ef pressesmay occupy only; the

same room as'three rows ot ressee of the old type.., V There-is als0; considerable economy in'first cost and weight, since one frame: serves for the w rkingp rts of jitwo presses, and is of butslightly. more weight than a frame for a single press, v fl ama ware th'a't punching presses have been'made, each witha complete frame, and

the. two frames have been -Infou'nted close 'to- E gether, back to back and in some" instances liavebeen bolted together" I Such construction effects no suchsavingi1itl1e weight, firet cost, or space as is attained the present invention. The depth'o'f the press frames in such presses is twice that of a single press,

frame ,1 whereas according to the presentin vention the pressiframe for the working parts oftwo presses is in the main of only the same depth as apre'ssframefor afsingle press In-the specific construction the mechanisims or press members may be varied in any of the ways customary in the art. Theinvention is thus susceptible of' nodification within the scope of the appended claims.

claim as my invention r 1. A twln press havlng a single'frame and the press members of two presses carried thereby, and means for preventing the s1multaneous starting of both pressesJ -2. Aftwinpress according to claim 1, such means comprising movable stop mechanism inter-connecting thestarting means of both presses, whereby when either starting means is displaced to start. the press, it blocks the starting-movement vof the other I starting means.- o V v V 111 w tness whereof, Ihave-hereunto signed myname.

WILLIAM KLQCKE.

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